Sand filling cylinder base plate limiting device

Abstract

The utility model discloses a limiting device for a base plate of a sand filling cylinder. The limiting device comprises a positioning block, a limiting plate and a locking mechanism, the positioning block and the limiting plate are detachably fixed on a specified bottom surface through foot margin steel nails and are matched with each other through an arc-shaped through groove formed in the side wall of one side of the positioning block and an arc-shaped notch formed in one end of the limiting plate, so that the sand filling cylinder base plate is positioned and marked; the locking mechanism is arranged on the limiting plate, a top push rod of the locking mechanism telescopically moves on the sand filling cylinder base plate through the top push rod, a screw rod of the locking mechanism is in threaded connection with the interior of a fixed push rod, the position of a front end jacking head of the locking mechanism is finely adjusted, and then the sand filling cylinder base plate is fixed; according to the device, position marking of the sand filling cylinder base plate is achieved through the positioning block and the limiting plate, positioning marking time is saved, and the problem that marks are prone to being damaged is solved; and the locking mechanism is arranged, so that the device can quickly and conveniently fix the locking sand filling cylinder base plate, and the device has the advantages that the working efficiency is improved, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway detection tools, in particular to a sand filling cylinder base plate limiting device. Background Art

[0002] At present, the common detection method for testing the compaction of highway structure layers in domestic laboratories is the pit digging and sand filling test compaction method. The test steps of this method are: first place the substrate on the surface of the structural layer and mark the position of the substrate to perform the first step of sand filling; then, remove the substrate and collect the sand, then put the substrate back in place and fix it, and perform hollowing and the second step of sand filling. In the above process, after completing the substrate position marking and sand filling, the process of removing the substrate and cleaning the sand must be particularly careful to prevent damage to the mark, which causes this process to take up a long working time and is inconvenient, the test work efficiency is low, and the position is easily inaccurate due to the damage of the mark; and, because the specification requires that the position of the substrate is relatively fixed during the test hollowing process, but the test equipment does not have a dedicated fixing device, so the actual test process is generally carried out by manual hand-holding and foot-stepping, which is not only very inconvenient for the test personnel to work, but also unsafe and inefficient. Utility Model Content

[0003] The utility model aims to provide a sand filling tube base plate limiting device which can solve the above technical problems.

[0004] To this end, the technical solution of the utility model is as follows:

[0005] A sand filling tube base plate limiting device comprises a positioning block, a limiting plate and a locking mechanism; wherein:

[0006] The positioning block is a horizontally arranged strip-shaped body, and one side wall of the positioning block in the length direction is indented inward to form an arc-shaped through groove that passes through from top to bottom, and the arc surface radius of the arc-shaped through groove is adapted to the outer circumferential radius of the sand filling tube substrate, so that the outer wall of the sand filling tube substrate can be against the arc surface of the arc-shaped through groove; two first anchor steel nails are symmetrically and vertically penetrated at both ends of the top surface of the positioning block;

[0007] The limiting plate is arranged horizontally, and an arc-shaped notch is provided on the side wall at one end thereof, and the arc surface radius of the arc-shaped notch is adapted to the outer circumferential radius of the sand filling tube substrate, so that the outer wall of the sand filling tube substrate can be against the arc surface of the arc-shaped notch; two second anchor steel nails are symmetrically and vertically penetrated on both sides of the limiting plate at one end with the arc-shaped notch, and a second anchor steel nail is vertically penetrated in the middle of the other end of the limiting plate opposite to the arc-shaped notch;

[0008] The locking mechanism includes a tightening head, a push rod, a screw and a driving mechanism arranged on the bracket; the bracket is fixed on the limit plate, the push rod is horizontally penetrated on the bracket, and its rear end is connected to the driving mechanism to push the push rod to move forward and backward in the horizontal direction through the driving structure; the rear side of the screw is penetrated and threadedly connected to the central through hole of the fixed push rod, and a nut is sleeved and fixed on the front side rod wall; the tightening head is fixed to the front end of the screw to move forward with the screw and abut against the outer wall of the sand filling tube base plate.

[0009] Furthermore, a rubber plate is fixed on the arc surface of the arc-shaped through groove.

[0010] Furthermore, the nail cap of each first anchor steel nail is fixed on the top surface of the positioning block; and the nail cap of each second anchor steel nail is fixed on the top surface of the limiting plate.

[0011] Furthermore, the driving mechanism includes a locking rod and a curved rod; the rear end of the push rod is hingedly connected to one end of the curved rod through a first locking shaft, the front end of the locking rod is hingedly connected to the top end of the rear end vertical plate of the bracket through a third locking shaft, and the rear end of the curved rod is hingedly connected to the front end of the locking rod through a second locking shaft, so that the push rod can be extended and retracted relative to the sleeve by pushing the locking rod upward or pushing the locking rod downward.

[0012] Furthermore, the tightening head is a cylindrical disc body, which is composed of a rubber disc and a rigid disc that are stacked and connected as a whole; the front end of the screw is vertically welded and fixed to the rigid disc of the tightening head, so that it rests on the outer wall of the sand filling cylinder base plate through the rubber disc.

[0013] Compared with the prior art, the beneficial effects of the sand filling cylinder base plate limiting device include:

[0014] 1) The device can directly determine the position of the sand filling tube substrate by designing a positioning combination structure of a positioning block and a limiting plate, saving the time required for positioning marks. At the same time, the sand collecting process can also be normal, without worrying about the mark being damaged or the inaccurate position of the sand filling tube substrate when it is placed again due to the damage of the mark, thereby improving work efficiency;

[0015] 2) The device can quickly and conveniently fix the locked sand filling tube substrate by arranging a locking mechanism on the limit plate, and can fine-tune the protruding position of the tightening head based on the actual pore spacing between the limit plate and the sand filling tube substrate to achieve effective locking and fixing; in the subsequent hollowing operation, the test personnel are freed from their hands and feet, which improves work efficiency and increases the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the limiting device of the sand filling tube base plate of the utility model;

[0017] Figure 2It is a side view of the limiting device of the sand filling tube base plate of the utility model;

[0018] Figure 3 It is a schematic diagram of the locking state of the locking mechanism of the sand filling cylinder base plate limiting device of the utility model;

[0019] Figure 4 It is a schematic diagram of the open state of the locking mechanism of the sand filling cylinder base plate limiting device of the utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0021] See also Figure 1 and Figure 2 The sand filling tube base plate limiting device comprises a positioning block 1, a limiting plate 4 and a locking mechanism 5.

[0022] The positioning block 1 is a horizontally arranged strip-shaped body, and one side wall of the positioning block 1 is inwardly recessed in the length direction to form an arc-shaped through groove that passes through from top to bottom, and the arc surface radius of the arc-shaped through groove is adapted to the outer circumferential radius of the sand-filling tube substrate 7, so that the outer wall of the sand-filling tube substrate 7 can be against the arc surface of the arc-shaped through groove; two first anchor steel nails 3 are symmetrically and vertically penetrated at both ends of the top surface of the positioning block 1, and the nail caps of the two first anchor steel nails 3 are fixed on the top surface of the positioning block 1. As a preferred technical solution of this embodiment, a rubber plate 2 is fixed on the arc surface of the arc-shaped through groove to protect the outer wall of the sand-filling tube substrate 7.

[0023] As an implementation scheme of this embodiment, based on the outer radius of the sand filling tube base plate 7 being 148.5mm, the positioning block 1 is a rectangular steel bar with a horizontal width of 20mm, and the radius of its arc-shaped through groove is 152.5mm; the rubber plate 2 is a rectangular rubber plate with a thickness of 4mm, and its length and width are adapted to the arc surface size of the arc-shaped through groove, and is fixed to the arc surface of the arc-shaped through groove by tempered glue. The two first anchor steel nails 3 are both steel nails with a diameter of 10mm and a length of 50mm; the nail cap of each steel nail is welded and fixed to the top surface of the positioning block 1.

[0024] The limiting plate 4 is a horizontally arranged rectangular steel plate, and an arc-shaped notch is opened on the side wall of one end thereof, and the arc radius of the arc-shaped notch is adapted to the outer circumferential radius of the sand-filling tube base plate 7, so that the outer wall of the sand-filling tube base plate 7 can rest on the arc surface of the arc-shaped notch; two second anchor steel nails 6 are symmetrically and vertically penetrated on both sides of the limiting plate 4 at one end with the arc-shaped notch, and a second anchor steel nail 6 is vertically penetrated in the middle of the limiting plate 4 at the other end with the arc-shaped notch, and the nail cap of each second anchor steel nail 6 is fixed on the top surface of the limiting plate 4; the three second anchor steel nails 6 are distributed in a triangle, which has a better fixing and positioning effect.

[0025] As an implementation scheme of this embodiment, the limit plate 4 is a thick steel plate with a length × width × thickness of 150mm × 120mm × 4mm. Based on the outer radius of the sand filling tube base plate 7 being 148.5mm, an arc-shaped notch with a radius of 148.5mm is processed on the limit plate 4 at the edge of 120mm width on one side. The anchor steel nails are steel nails with a diameter of 10mm and a height of 50mm. There are three of them distributed in a triangle and driven into the ground during work to play a fixing and positioning role.

[0026] See also Figure 3 and Figure 4 The locking mechanism 5 includes a tightening head 5a, a pushing rod 5c, a sleeve 5d, a locking rod 5f, a bent rod 5j and a screw 5k arranged on the bracket 5i; wherein the bracket 5i includes a horizontal plate fixed on the limit plate 4, and the first vertical plate and the second vertical plate are respectively fixed at both ends of the horizontal plate, and the first vertical plate and the second vertical plate are vertically arranged; a through hole is provided on the first vertical plate, and the sleeve 5d is vertically fixed on the vertical plate in a coaxial arrangement with the through hole; the pushing rod 5c is a rod body with an axial through hole in the center, which is horizontally penetrated into the through holes on the sleeve 5d and the vertical plate; the rear end of the pushing rod 5c is hingedly connected to one end of the bent rod 5j through the first locking shaft 5e, the front end of the locking rod 5f is hingedly connected to the top end of the second vertical plate through the third locking shaft 5h, and the rear end of the bent rod 5j is The second locking shaft 5g is hingedly connected to the front end of the locking rod 5f, so that the push rod 5c can be extended and retracted relative to the sleeve 5d by pushing the locking rod 5f upward or downward; the inner wall of the push rod 5c is provided with an internal thread that matches the screw 5k, so that the rear side of the screw 5k is inserted and threadedly connected in the push rod 5c; a nut 5b is sleeved and fixed on the front outer wall of the screw 5k, so that the screw 5k can be rotated by the nut 5b to adjust the extension length of the screw 5k relative to the push rod 5c; the tightening head 5a is a cylindrical disk body, which is composed of a rubber disk and a rigid disk that are stacked and connected and fixed as one; the front end of the screw 5k is vertically and welded to the rigid disk of the tightening head 5a, so that it is against the outer wall of the sand filling tube base plate 7 through the rubber disk.

[0027] As a setting method of this embodiment, when the locking mechanism is in an open state, the first locking axis 5e, the second locking axis 5g and the third locking axis 5h are arranged in parallel and are located on the same horizontal plane, and when the locking rod 5f is pushed, the position of the second locking axis 5g changes with the pushing direction of the locking rod 5f. When the locking mechanism is in a locked state, the first locking axis 5e, the second locking axis 5g and the third locking axis 5h are again arranged in parallel and are located on the same horizontal plane.

[0028] The specific use method of the sand filling tube substrate limiting device is as follows:

[0029] S1, place the sand filling tube base plate 7 on the surface of the pavement structure layer, first hammer the two first anchor steel nails 3 on the positioning block 1 into the pavement structure layer in a manner that the arc surface of the arc through groove of the positioning block 1 is in contact with the outer wall of the sand filling tube base plate 7, so as to mark the boundary of one side of the sand filling tube base plate 7; then hammer the three second anchor steel nails 6 on the limiting plate 4 into the pavement structure layer in a manner that the arc notch of the limiting plate 4 is in contact with the outer wall of the sand filling tube base plate 7, and keep the limiting plate 4, the sand filling tube base plate 7 and the positioning block 1 on the same center line;

[0030] S2. After step S1, the position of the sand filling tube substrate 7 is marked by the positioning block 1 and the limit plate 4, so the first step of sand filling can be carried out without manual marking; after the first step of sand filling is completed, the sand filling tube substrate 7 is taken away and the sand is collected; since the position of the sand filling tube substrate 7 is marked by the positioning block 1 and the limit plate 4, there is no need to worry about damaging the mark, and the sand can be collected normally;

[0031] S3, according to the position of the sand filling cylinder base plate 7 marked by the positioning block 1 and the limit plate 4, the position of the sand filling cylinder base plate 7 is returned to the original position, and the sand filling cylinder base plate 7 is fixed by using a locking mechanism;

[0032] Since the anchor steel nails 6 are driven into the pavement structure layer by manual hammering in step S1, it is difficult for the positioning block 1 and the limit plate 4 to be fixed in an absolutely close fit with the sand filling tube base plate 7 during the actual hammering process. Therefore, it is necessary to fine-tune the locking mechanism 5 before locking it using the locking mechanism 5; specifically, one side of the sand filling tube base plate 7 is pressed tightly against the surface of the rubber plate 2 fixed on the positioning block 1; see Figure 4 , keep the locking mechanism 5 in the open state, because the extension length of the screw rod 5k of the locking mechanism 5 relative to the push rod 5c is set based on the state that the limit plate 4 is close to the outer wall of the sand filling tube base plate 7, therefore, according to the gap width between the outer wall of the sand filling tube base plate 7 and the limit plate 4, the nut 6b is rotated to make the screw rod 5k extend relative to the push rod 5c by a length corresponding to the gap width (for example, the extension length of the screw rod 5k relative to the push rod 5c is the gap width + 1.5mm);

[0033] S4. See Figure 3 , push the locking rod 5f upward (i.e., the locking rod 5f rotates 180° relative to the second vertical plate), drive the fixed push rod 5c to extend relative to the sleeve 5d toward the setting direction of the sand filling cylinder base plate 7, until the pressing head 5a is tightly against the outer wall of the sand filling cylinder base plate 7. At this time, the rubber disc of the pressing head 5a and the rubber plate 2 are compressed, so that the locking mechanism 5 fixes the sand filling cylinder base plate 7;

[0034] S5. After the sand filling tube base plate 7 is fixed, the subsequent hollowing and second sand filling operations can be carried out.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sand filling tube substrate limiting device, characterized in that: The invention comprises a positioning block (1), a limiting plate (4) and a locking mechanism (5); wherein the positioning block (1) is a horizontally arranged strip-shaped body, and a side wall on one side of the strip-shaped body in the length direction is indented inwardly to form an arc-shaped through groove which passes through from top to bottom, and the arc surface radius of the arc-shaped through groove is adapted to the outer peripheral radius of the sand filling tube substrate (7), so that the outer wall of the sand filling tube substrate (7) can abut against the arc surface of the arc-shaped through groove; two first anchor steel nails (3) are symmetrically and vertically penetrated at both ends of the top surface of the positioning block (1); the limiting plate (4) is horizontally arranged, and an arc-shaped notch is formed on the side wall at one end of the strip-shaped body, and the arc surface radius of the arc-shaped notch is adapted to the outer peripheral radius of the sand filling tube substrate (7), so that the outer wall of the sand filling tube substrate (7) can abut against the arc surface of the arc-shaped notch; two first anchor steel nails (3) are symmetrically and vertically penetrated on both sides of the limiting plate (4) at one end of the strip-shaped body with the arc-shaped notch. A second anchor steel nail (6) is vertically penetrated in the middle of the other end of the limiting plate (4) opposite to the arc-shaped notch; the locking mechanism (5) comprises a tightening head (5a), a push rod (5c), a screw (5k) and a driving mechanism arranged on a bracket (5i); the bracket (5i) is fixed on the limiting plate (4); the push rod (5c) is horizontally penetrated on the bracket (5i); its rear end is connected to the driving mechanism so as to push the push rod (5c) to move forward and backward in the horizontal direction through the driving structure; the rear side of the screw (5k) is penetrated and threadedly connected in the central through hole of the fixed push rod (5c); a nut (5b) is sleeved and fixed on the front side rod wall; the tightening head (5a) is fixed to the front end of the screw (5k) so as to move forward with the screw (5k) and abut against the outer wall of the sand filling tube base plate (7).

2. The sand filling tube base plate limiting device according to claim 1 is characterized in that: A rubber plate (2) is fixed on the arc surface of the arc-shaped through groove.

3. The sand filling cylinder base plate limiting device according to claim 1, characterized in that: The nail cap of each first anchor steel nail (3) is fixed on the top surface of the positioning block (1); and the nail cap of each second anchor steel nail (6) is fixed on the top surface of the limiting plate (4).

4. The sand filling cylinder base plate limiting device according to claim 1, characterized in that: The driving mechanism comprises a locking rod (5f) and a bent rod (5j); the rear end of the push rod (5c) is hingedly connected to one end of the bent rod (5j) via a first locking shaft (5e), ​​the front end of the locking rod (5f) is hingedly connected to the top end of the rear end vertical plate of the bracket (5i) via a third locking shaft (5h), and the rear end of the bent rod (5j) is hingedly connected to the front end of the locking rod (5f) via a second locking shaft (5g), so that the push rod (5c) can be extended and retracted relative to the sleeve (5d) by pushing the locking rod (5f) upward or downward.

5. The sand filling cylinder base plate limiting device according to claim 1, characterized in that: The tightening head (5a) is a cylindrical disc body, which is composed of a rubber disc and a rigid disc that are stacked and connected and fixed as one; the front end of the screw rod (5k) is vertically welded and fixed on the rigid disc of the tightening head (5a), so that it abuts against the outer wall of the sand filling tube base plate (7) through the rubber disc.

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